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Webinar: Parsing C++ - 10.10

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Examples of errors detected by the V578…

Examples of errors detected by the V578 diagnostic

V578. Suspicious bitwise operation was detected. Consider inspecting it.


NetXMS

V578 An odd bitwise operation detected: m_flags & (0x00000002 | 0x00000002). Consider verifying it. nms_objects.h 1410


#define CF_AUTO_UNBIND 0x00000002

bool isAutoUnbindEnabled()
{
  return ((m_flags & (CF_AUTO_UNBIND | CF_AUTO_UNBIND)) ==
          (CF_AUTO_UNBIND | CF_AUTO_UNBIND)) ? true : false;
}

RT-Thread

V578 An odd bitwise operation detected. Consider verifying it. pwm.c 415


uint32_t PWM_GetADCTriggerFlag (PWM_T *pwm,
                                uint32_t u32ChannelNum)
{
  uint32_t u32Ret;

  u32Ret = pwm->TRGADCSTS >> u32ChannelNum;

  return (u32Ret & (PWM_TRIGGER_ADC_PERIOD_POINT |
                    PWM_TRIGGER_ADC_CENTER_POINT |
                    PWM_TRIGGER_ADC_FALLING_EDGE_POINT |   // <=
                    PWM_TRIGGER_ADC_FALLING_EDGE_POINT));  // <=
}

Android

V578 An odd bitwise operation detected. Consider verifying it. bta_dm_co.cc 259


void bta_dm_co_ble_io_req(....)
{
  ....
  *p_auth_req = bte_appl_cfg.ble_auth_req |
                (bte_appl_cfg.ble_auth_req & 0x04) |
                ((*p_auth_req) & 0x04);
  ....
}

Godot Engine

V578 An odd bitwise operation detected. Consider verifying it. mesh_storage.cpp 1414


void MeshStorage::update_mesh_instances()
{
  ....
  uint64_t mask = RS::ARRAY_FORMAT_VERTEX | RS::ARRAY_FORMAT_NORMAL
                | RS::ARRAY_FORMAT_VERTEX;
  ....
}

Similar errors can be found in some other places:

  • V578 An odd bitwise operation detected. Consider verifying it. mesh_storage.cpp 1300